<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<form action="http://localhost:8080/download" method="get">
    <input type="text" name="fileName" placeholder="请输入要下载的文件名">
    <input type="submit" value="下载"/>
</form>


</body>
</html>